if two consecutive class marks of a distribution are 50 and 56, then find its class size
Answers
SOLUTION
GIVEN
Two consecutive class marks of a distribution are 50 and 56
TO DETERMINE
The class size
CONCEPT TO BE IMPLEMENTED
CLASS INTERVAL
When the number of sample values are large in number and are in wide range, then the whole data is divided in a number of several groups according to the size of the sample. Each of these groups, made as above, is known as class interval
CLASS BOUNDARY
When class intervals are such a type that the upper class limit of any class is not equal to lower class limit of successive class then to get any continuous graphical representation of the data it is sometimes required to rearrange the class limits in such a way that the upper class limit of any class coincides with the lower class limit of next class. Then these class limits are called class boundaries. The lower and upper ends of any class are called lower and upper class boundaries respectively.
CLASS LENGTH
Length of the class interval of an class is defined to be the difference between the lower and upper class boundaries ( not class limits) of that particular class interval.
Class length = Upper Class boundary - Lower class boundary
CLASS FREQUENCY
The number of observed values falling within a class is called the frequency of that class
CLASS MARK
For any grouped frequency table with class intervals, the middle value of the class limits or the class boundaries of any class is called class mark of the class
EVALUATION
Here it is given that two consecutive class marks of a distribution are 50 and 56
Hence the required class size
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Learn more from Brainly :-
1. Frequency density corresponding to a class interval is the ratio of
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